Madison Water Quality Report
4 cities ranked · Average grade: A- · Iowa
Avg Score
89.9
Cities Ranked
4
Health Violations
4
PFAS Detected
1
89.9
County avg score
4
Cities ranked
100%
A or B grade
0%
D or F grade
4
Health violations
1
PFAS detected
Grade Distribution
How Madison cities scored
A
4
100%
Excellent
B
0
0%
Good
C
0
0%
Fair
D
0
0%
Poor
F
0
0%
Failing
Comparison
County vs Iowa average
▲ 2.4 pts above state average
City Map
Water quality across Madison
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Madison
Best cities
Worst cities
County context
100.0%
of residents on fluoridated water (CDC, 2020)
0
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Madison
Industrial polluters nearby
Facilities reporting the most surface-water releases in Madison, 2023.
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
CENTRAL IOWA READY MIX WINTERSET, IA50273 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings